Standby; Restart Standby; Crankcase Heater Control - Daikin RXYQ5-48MAY1 Service Manual

Special Control
3.5

Standby

3.5.1

Restart Standby

Used to forcedly stop the compressor for a period of five minutes, in order to prevent the frequent ON/OFF of the
compressor and equalize the pressure within the refrigerant system.
Actuator
Compressor
Outdoor unit fan
Four way valve
Main motorized valve (EV1)
Subcooling motorized valve (EV2)
Hot gas bypass valve (SVP)
Receiver gas discharging valve (SVG)
Non-operating unit liquid pipe stop
valve (SVSL)
Ending conditions
* Actuators are based on RXYQ16MA.

3.5.2 Crankcase Heater Control

In order to prevent the refrigerant from dwelling in the compressor in the stopped mode, this mode is used to control the
crankcase heater.
90
Operation
OFF
Ta>30°C: STEP4
Ta≤30°C: OFF
Holds ON
0 pls
0 pls
OFF
OFF
ON
5 min.





In the case of RXYQ5MA, this valve
turns ON.



˚C
˚C
Si39-407
Remarks
Function